If you’ve used Siri as much as I have, you’re sure to have come across a message similar to the one pictured above. Being a pretty common issue, most often caused between a bad connection to either your network or Apple’s server, it’s extremely frustrating knowing you can’t always rely on Siri to provide information when it’s needed. Luckily, this problem is pretty easy to fix.
Nine out of 10 times, turning on airplane mode, waiting about 20 seconds, and then turning it back off, will cause Siri to start working again. This is because turning on airplane mode cuts off any connection to any data network you may be connected to, and reconnecting to it properly. If this doesn’t work, you could also try disabling Siri and re-enabling it through the Settings app. As a last resort, try turning your device off and back on again. If none of these solutions work, it’s most likely a problem with Apple’s servers, or your network, rather than with Siri itself.